Oprah Winfrey

Founder of Harpo Productions in 1986 and the OWN network, Oprah Winfrey became the first Black female billionaire in North America and built a multi-industry media empire worth over $2.5 billion. The Oprah Winfrey Show ran for 25 seasons and reached 40 million weekly viewers at its peak, making her one of the most influential media personalities in history.